An avionic system includes computers (11a, . . . , 1n, 12a, . . . 12n, 13a . . . 13n) of the generic computer type that can be adapted by software programming to avionic functions for which at least some of these computers have means that combine electronic resources for data processing, computation and communication by analog or digital bus with electric power management resources so as to create modular avionics with integrated power.